Food mixer



July 16, 1935.

E. MROSS FOOD MIXER Filed May 23, 1932 2 Sheets-Sheet 1 w z Mm z a Iva MM N E. MROSS FOOD MIXER July 16, 1935.

2 Sheets-Sheet 2 Filed May 23. 1932 Nvw wN &N @N

5 N g 0 1 r n 1 a w I- l, mm. z r z a WWW IW M a i 7 Patented July is, i935 This invention The object of simple and efllcient preferably, to provid in combination with tion of the b0 agitator. The

of having the its own axis obtainable, dependin axis of th agitator the bowl.

The advantages of means for gradually the mixer are fully to the agitators of in my co-pending filed herewith.

cially directed to volving the bowl, in mixers which the em dying the said wl laterally advantage of cally is obvious, for, except when bowl automatic and also move. at a variety of applicaton, Seri The present inve which may be have the bowl in a predetermined position FOOD EdwardMrocs Racine. Wis.,

MIXER ICE assignor-to Hamilton Beach Manufacturing Company, Racine, Wisu a corporation of Wisconsin a Application May 23, 1932, Serial N0. 612,881

aclalma.

relates to food mixers, and more the invention is to provide a mechanical device for autoving the bowl, whether the bowl is ains ingredients to be mixed; and,

e such bowl revolving means means for shifting the posihavlng the bowl really revolved about ble laterally of the revolving speeds are g on the extent to which the is spaced from the axis of providing, in a to shifting the bowl od mixer, relatively set forth al No. 612,884, ntion is espemeans for automatically reused to advantage revolubly mounted as well as in mixers bowl shifting mechanism of my co-pending application.

In the drawings:-

Flg. 1 is a side elevati my inventio ate for carrying the bowl, shown support em bowl and dished pl in section.

on of a food mixer and n, with a mixing Fig. 2 is a horizontal sectional view taken on the line 2 -2 of Fig.

Fig. 3 is a-front ing and agitator section, and also section.

elevation of the mixer gear casunit, the latter being partly in owing the base and bowl in rm. 4 is a horizontal section talren on the line 4-4 of Fig. 1.

Fig. 5 is an enlarged elevation of construction, partly in section.

As illustrative of bodied the invent this application, I ha tion food mixer and ion sought to a detail of the the device in which is embe protected by ve shown in Fig. 1 a combinaiuice extractor, in which the with respect to the 13 horizontally disposed base is in upright socket, integral with t ted arm at i2, a

a gear casing l5, and'a de beater unit l6. The mo nected with the agitators and with the juice ing. The gear casing H which receives the and removably conne mixer bowl is indica motor, at 22.

It will be understood that the d and claimed f various constr articular combi shown, describe in food mixers 0 limited to the p extr I5 is provided with coupling which ope cts the reamer d in the gear casing. The

dicated at l0, an he base, at H, a nd a motor driven tachable agitator or tor is operatively conbeneath the gear casing actor above the gear casa socket ratively rive shaft invention herein nation in which it is illustrated herein, in Fig. 1.

Novel features of herein, are the s herewith.

In the circular top portion 24 connected to ng lever 25'. Th d in a circular opening in e, and are revoluble about the axis 26 which holds the plates is a shifter plate ing an actuati 25 are mounte 23 of the bas of the screw 25 together.

An open top bearin downwardly from t pending centrally fr on food mixer and .1

con

carries the bowl 2i.

shifter plate parts is d in the co-pending appli As will be readily und the lever 25' revolves t axis, and carries the b ing the bearing unit 2 plate 30, from the full 4 to the position indie to an intermediate bowl 2i may be move the agitator unit l6,

shifter plate 2 struction of the combinauice extractor, not claimed 25 ubject of applications co-pending 23 of the base ill a disc 25 carrye plates 24 and the top 24 and g receptacle 2! extends I and is 10- ate 30 which The construction of the escribed in greater detail cation herein referred to. erstood, the actuation of he plate 24 about its own caring receptacle 21 hold- 8, 29 of the bowl-carrying line position of Figs. 2 and ated by the dotte osition. By this d lines, or device the d, gradually, laterally of that said unit will be 10- ,u WWW .cured to the gear casing l5, consists of two beater shafts 3|, 32, carrying beater rings 33. At their upper ends the beater shafts 3|, 32 extend loose-- ly and rotatably through a plate 34, that part of the shafts 3i, 32 above theplate 34 being square in cross section. At their lower ends the shafts 3i, 32 are rotatably mounted in a flat cross piece 35. A frame consisting of a flat wire loop 36 (Fig. 1) is connected at its bottoni to the cross piece 35, and at its top to the plate 34, thus holding the beaters together as a unit.

A pair of couplings 31 are carried by the ends of the driven shafts 38 which depend from the gear casing IS. The square ends 39 of the shafts 3| and 32 fit into and rotate with the couplings 31. The center support 40 and hand screw 4| hold the unit in operative position on the gear casing l5.

One of the beater shafts, in this embodiment the shaft 32, is equipped with means for automatically revolving the bowl when the shaft is being rotated. The shaft 32 has fixedly mounted in its lower end a pin 42 provided with a small disc or head 43, slightly convex on its lower surface. The pin 42 extends through the cross piece 35, is rotatable and vertically movable relatively to the cross piece 35. Preferably a coiled spring 44 is interposed between the shaft 38 and end 39 of the shaft 32 in the coupling 31. The expansive tendency of the spring as well as the weight of the beater shaft 32 tend to force the shaft 32 downwardly and consequently the pin 42 and head 43 will project below the cross piece 35, and the head 43 will bear on the bottom of the bowl 2i. It will, of course, be understood that the mixer as a whole will be so supported, in relation to the bowl, that the bottom of the agitator unit will be in proper position, relatively close to the surface of the bowl bottom.

If the bottom of the bowl had a perfectly flat upper surface, the bearing of the head 43 would be uniform on the bowl surface, and the greatest speed of revolution of the bowl would be attained when the head 43 was located near but not at the exact center of the bowl bottom. However, most bowls have slightly concave surfaces and, therefore, the head 43 bears more heavily on the surface adjacent the side walls than near the center, thus increasing the revolving efficiency of the bowl when the agitator carrying the head 43 is located in an annular path removed from the center of the bowl.

The automatic bowl revolving means preferably will be mounted on that beater shaft which is nearest the circumferential side wall of the bowl when the bowl and agitator unit are not axially aligned. For example, in Fig. 3 the bowl 2i is movable from the centered, solid line position, toward the right, to the off-center, dotted line position. Therefore, the left hand beater shaft 32 carries the revolving device 42, 43. However, the automatic bowl revolving means maybe applied to either of the agitators. Since the beater shafts rotate in opposite directions, only one should be equipped as described. The rotation of the disc 43 while bearing on the bowl bottom, causes the bowl to revolve about the axis of the hub 28, and this movement brings into contact with the agitator all the material lying in the annular path in which the agitator is working. By shifting the plate 24, while the bowl is being automatically revolved, materials in other annular paths of the bowl are brought into contact with the heaters, and quick, eillcient mixing is accomplished.

Changes may be made in details of construction without departing from the scope of my invention and I do not intend to be limited to the exact form shown and described, except as set forth in the appended claims.

I claim:-

1. A food mixer comprising a motor, an agitator operatively connected with the motor, a support on which the mixer is carried, a mixing bowl, means on the support for revolubly carrying the bowl means for gradually shifting the position of the bowl laterally of the agitator while the agitator is in the bowl and the bowl is located on its revoluble support, and means on the agitator for revolving the bowl about its own axis when the agitator is being rotated by the motor.

2. A food mixer comprising a motor, an agitator operatively connected with the motor, a support on which the mixer is carried, a mixing bowl, means on the support for revolubly carrying the bowl means for gradually shifting the position of the bowl laterally of the agitator while the agitator is in the bowl and the bowl is located on its revoluble support, and means on the agitator for revolving the bowl about its own axis when the agitator is being rotated by the motor, said means comprising a disc carried on the lower end of the agitator and bearing on the upper surface of the bottom of the bowl.

3. A food mixer comprising a motor, an agitator operatively connected with the motor, a support on which the mixer is carried, a mixing bowl, means on the support for revolubly carrying the bowl, and means on the agitator for revolving the bowl about its own axis when the agitator is being rotated by the motor, the agitator comprising a pair of rotatable beater shafts, their lower ends being rotatably mounted in a cross piece, and the means for automatically revolving the bowl comprising a pin depending from one of the beater shafts, extending through the cross piece, and a disc on the end of the pin, said disc bearing on the upper surface of the bowl bottom.

4. A food mixer comprising a base, an arm extending upwardly from the base, a power unit supported by the arm in overhanging position relatively to the base, an agitator depending from the power unit, a bowl, a bowl-carrying plate rotatably mounted on the base, means for moving the bowl-carrying plate and bowl off center relatively to the agitator while the bowl is located on said plate and the agitator is in the bowl, and a rotated member on the lower end of the agitator for bearing on the upper surface of the bowl bottom laterally of the axis of the bowl.

5. A food mixer comprising a base, an arm extending upwardly from the base, a power unit supported by the arm in overhanging position relatively to the base, an agitator depending from the power unit, a bowl, a bowl-carrying plate rotatably mounted on the base, means for moving the bowl-carrying plate and bowl off center relatively to the agitator while the bowl is located on said plate and the agitator is in the bowl, the agitator having two vertical shafts carrying beater elements, and means on one of the agitator shafts for establishing bearing pressure of one of said shafts on the bowl bottom, laterally of the axis of the bowl, while the other agitator shaft is in non-bearing relation relatively to the bowl.

6. A food mixer comprising a rotatable agitator having two beater shafts, means for rotating the bowl is located on its revoluble support, and means same in opposite directions, a bowl freely revoluon the agitator for revolving the bowl about its bly mounted in juxtaposition to the agitator, a own axis when the agitator is being rotated by bowl-bearing member mounted on the lower end the motor, said means comprising a disc carried of one of the beater shafts and projecting below on the lower end of the agitator and bearing on 5 the end of the other beater shaft, and means on the upper surface of the bottom of the bowl.

the said first mentioned beater shaft for producing 8. A food mixer comprising a motor, an agifrictional, yielding engagement between the bowltator operatively connected with the motor, a supbearing member and the bowl and thereby auto? port on which the mixer is carried, a mixing bowl,

matically revolving the bowl when the agitator means on the support for revolubly carrying the 10 is operated. bowl, means for gradually shifting the relative 7. A food mixer comprising a motor,- an agiposition of the bowl and agitator in a lateral tator operatively connected with the motor,asupdirection while the agitator is in the bowl and port on which the mixer is carried, a mixing bowl, the bowl is located on its revoluble support, and means on the support for revolubly carrying the means on the agitator for revolving the bowl l5 bowl, means for gradually shifting the relative about its own axis when the agitator is being position of the bowl and agitator in a lateral rotated by the motor. direction while the agitator is in the bowl and the EDWARD MROSS. 

